TTE Technology, Inc. (dba TCL North America) TEST REPORT

EXHIBIT 1: GENERAL DESCRIPTION

1.1 Product Description

The Equipment Under Test (EUT) is a LED TV. The device can be used to connect a PC by HDMI port. The EUT is powered by AC 120V, 60Hz. The EUT contains a module that operates in the following frequency bands: 2412MHz to 2462MHz (802.11b, 802.11g, 802.11n-HT20 modes), 2422MHz to 2452MHz (802.11n-HT40 mode), and 5180MHz to 5240MHz, 5745MHz to 5825MHz (802.11a, 802.11n (20MHz, 40MHz), and 11ac (80MHz) modes). The models 65S421, 65S4, 65S423, 65S427, 65S425-MX, 65S427-MX, 65S425-CA, 65S427-CA, and 65S4 variants are hardware-identical to the 65S425 model, differing only in packaging and marketing.

1.2 Related Submittal(s) Grants

This application is for certification of a computer peripheral. Other digital functions were reported in verification report 180518007SZN-002. The host device includes a Wi-Fi module granted under FCC ID: 2AC23-WC0HR2601.

EXHIBIT 2: SYSTEM TEST CONFIGURATION

2.1 Justification

The system was configured for testing in a typical user fashion, adhering to ANSI C63.4 (2014). The EUT was powered by AC 120V/60Hz. The Wi-Fi module was active during testing. Emissions were maximized by rotating the EUT 360°, varying antenna height from 1 to 4 meters, and adjusting antenna polarization. The rear of the unit was positioned flush with the table. Testing covered the frequency range from 30MHz to 29.125GHz, with detected emissions being at least 20 dB below applicable limits.

2.2 EUT Exercising Software

N/A

2.3 Special Accessories

N/A

2.4 Equipment Modification

No modifications were installed by TTE Technology, Inc. (dba TCL North America) or Intertek Testing Services Shenzhen Ltd. Longhua Branch prior to testing.

2.5 Measurement Uncertainty

Measurement uncertainty was considered in determining the test conclusion.

2.6 Support Equipment List and Description

EXHIBIT 3: EMISSION RESULTS

Data includes worst-case configurations, sample calculations, configuration photographs, and emission data tables.

3.1 Field Strength Calculation

Field strength is calculated by adding the spectrum analyzer reading to factors for preamplifiers, antennas, cables, pulse desensitization, and average factors. The formula is FS = RA + AF + CF – AG, where FS is Field Strength (dBuV/m), RA is Receiver Amplitude (dBuV), AF is Antenna Factor (dB/m), CF is Cable Attenuation Factor (dB), and AG is Amplifier Gain (dB).

3.2 Field Strength Calculation (cont'd)

Example calculation: Given a receiver reading (RA) of 62.0 dBuV, antenna factor (AF) of 7.4 dB/m, cable factor (CF) of 1.6 dB, and amplifier gain (AG) of 29.0 dB, the field strength (FS) is calculated as 62 + 7.4 + 1.6 – 29 = 42 dBuV/m. This is converted to 125.9 uV/m.

3.3 Radiated Emission Configuration Photograph

The worst-case radiated emission configuration photograph for 7440.000MHz (HDMI In(4K) Mode) is saved with the filename: radiated photos.pdf.

3.4 Radiated Emission Data

The data lists significant emission frequencies, limits, and margins of compliance. Negative margins indicate emissions below the limit. The judgement for HDMI In (4K) Mode was Passed by 3.7dB margin. Test Personnel: Leo Li, Engineer. Date: May 28, 2018.

Notes:

• Quasi-Peak detector is used for frequencies up to 1GHz; Peak and Average detectors are used for frequencies from 1GHz to 29.125GHz.
• All measurements were made at 3 meters.
• Negative values in the margin column indicate emissions below the limit.
• All other emissions were at least 20 dB below the applicable limits.

3.5 Conducted Emission at Mains Terminal

3.5.1 Conducted Emission Configuration Photograph

The worst-case conducted emission configuration photograph for 0.246 MHz (HDMI In Mode) is saved with the filename: conducted photos.pdf.

3.6 Conducted Emission Data

Judgement: Passed by 10.1 dB margin (HDMI In Mode). Test Personnel: Leo Li, Engineer. Date: May 28, 2018.

The document includes conducted emission test data for Live and Neutral phases, with QP and AV result tables and a graph illustrating the results against FCC Part 15 Class B limits.

EXHIBIT 4: EQUIPMENT PHOTOGRAPHS

For electronic filing, photographs of the tested EUT are saved with filenames: external photos.pdf and internal photos.pdf.

EXHIBIT 5: PRODUCT LABELLING

For electronic filing, the FCC ID label artwork and the label location are saved with the filename: label.pdf.

EXHIBIT 6: TECHNICAL SPECIFICATIONS

For electronic filing, the block diagram of the tested EUT is saved with the filename: block.pdf.

EXHIBIT 7: INSTRUCTION MANUAL

For electronic filing, a preliminary copy of the Instruction Manual is saved with the filename: manual.pdf. This manual will be provided to the end-user with each unit sold or leased in the United States.

EXHIBIT 8: MISCELLANEOUS INFORMATION

This section includes emission measuring procedures.

8.1 Emissions Test Procedures

The test procedures used by Intertek Testing Services for measurements of computer peripherals under FCC Part 15, Subpart B rules are described. The test setup and procedures meet ANSI C63.4 – 2014 requirements. The EUT is placed on a turntable (4 feet diameter, 0.8m height). Radiated emissions testing involves rotating the turntable and manipulating cables to find maximum emissions, varying antenna height (1-4m) and polarization. Detector functions are QP for 30MHz-1GHz (120kHz RBW) and PK/AV for 1GHz-29.125GHz (1MHz RBW). Conducted emissions use QP/AV (9kHz IFBW) from 150kHz-30MHz. Radiated emission scan range is 30MHz-29.125GHz. Conducted emission scan range is 150kHz-30MHz.

8.2 Emissions Test Procedures (cont'd)

The EUT is warmed up for 15 minutes prior to testing. Conducted measurements follow ANSI C63.4 – 2014.

EXHIBIT 9: TEST EQUIPMENT LIST

The following table lists the test equipment used: